Improvements in the Aquatinta Process. 207 
foetid:—int short, I considered her in a fit state for the 
operation. 
__ The necessity of extirpation in this case, and in the case 
of Ibrahim, was acknowledged in a consultation, and the 
operation was fixed for the next day, when the order arrived 
for me to repair with the army to Alexandria, and obliged 
me to abandon both these cases. 
L. Improvements in the Aquatinta Process, by which Pen, 
Pencil, and Chalk Drawings can le imitated. By Mr. 
J. Hassexu, of Clement’s Inn*. 
Sir, Pencizyive the various methods of imitating drawings 
and sketches in the graphic art fall short of an accurate 
imitation of the black-lead pencil, [ determined on an at- 
tempt, some years since, which, after repeated experiments, 
I flatter myself I have fully established. 
The manner is totally new, and solely my own inven- 
tion :—by the method [ adopt any artist can sketch with a 
black-lead pencil his subject immediately on the copper, 
and so simple and easy is its style, that an artist can do it 
with five minutes study. 
By this manner, the trouble in tracing on oil paper, and 
other re-tracing on the etching ground is avoided, and the 
doubtful handlmg of an etching-needle is done away, as the 
pencilling on the copper is visible in the smallest touch :— 
It has also another perfection, that by using a broader in- 
strument it will represent black chalk, a specimen of which 
I procured Mr. Munn, the landscape-painter, to make a 
trial of. I bave herewith sent the said specimen marked C, 
and Mr. Munn’s name is affixed to the same. This sub- 
ject he actually drew upon copper, under my inspection, in 
Jess than twenty minutes, the time he would have taken, 
perhaps, to do the same on paper; in fact, it can be as ra- 
pidly executed on copper as on paper. 
It is particularly pleasant for colouring up, to imitate 
drawings, as the lines are soft, and blend in with the co- 
our. It is a circumstance always objectionable in the 
common method of etching, that those so tinted can never 
be sufficiently drowned, nor destroyed, and always present a 
yy hard effect. 
t is equally adapted to historical sketching, and might 
* From Transactions of the Society for the Encouragement of Arts, Manu fac- 
tures, and Commerce, vol. xxviii. ‘The Society’s silver medal and thirty 
guineas were voted to Mr, Hassell for this communication. 
be 
